A thing that didn't make it into the movies is that Ring-girl can come out of any reflective surface, like anything you can see your reflection in. This led to a very creative thing where a guy was driving a motorcycle with the visor down at night and hellooo reflections.
Yeah, the world that the Ring takes place in is a computer simulation and she is a virus or something.
The ending of The Mist was fantastic, a real wow moment. I read the story many years earlier but that was new. Sidenote: one of the reasons I was interested in the movie was because I wanted to see what the lobstermen looked like, the ones that snipped Roland's fingers and during recovery he was fed lobsterman meat.
In contrast to that ending we have Jacob's Ladder. It's a movie where you come out fresh on the other side.
Then there's a movie I saw a long time ago that would fall into the middle, ending wise, can't remember what it is called. It was a psychological horror movie about a woman who lost her son but no one would help her, not even the police, because she never had a son, even her friends and family told her so. The despair was driving her crazier and crazier and she started to doubt her own sanity, you get the idea of what the movie was about, but... turns out that an evil version of herself from a parallel universe stole her son because she couldn't have children and then swapped their places, it was actually a crummy sci-fi movie not a horror movie I had just missed the first 20 minutes and wasn't paying attention in general.